2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/24/2018 | 10:00 AM - 10:15 AM | HYDROGEOMORPHIC CHARACTERISTICS ALTER AQUATIC INSECT DRIFT COMMUNITY COMPOSITION AND ABUNDANCE | 310 A
HYDROGEOMORPHIC CHARACTERISTICS ALTER AQUATIC INSECT DRIFT COMMUNITY COMPOSITION AND ABUNDANCE
Stream geomorphic features have been strongly related to multiple characteristics of benthic aquatic invertebrate communities. However, the potential influence of fluvial geomorphic features on invertebrate drift – a key biotic process in fluvial ecosystems – remains largely unknown. Here, we investigated relationships among hydrogeomorphic features and insect drift in urban headwater streams of the Columbus Metropolitan Area, Ohio. Drift of insects were sampled in spring, summer, and autumn for three years (2013-2015). Multiple hydrogeomorphic features were associated with the abundance and composition of insect drift. For example, insect abundance was negatively related to the width of the floodprone area while family richness was positively associated with incision ratio. Taxonomic-level responses were also observed: the relative abundance of odonates was positively correlated with shear stress and negatively correlated with entrenchment ratio. These preliminary results suggest that stream geomorphic adjustment may be an important driver of invertebrate drift in urban streams.
- Invertebrate
- Geomorphology
- Flow
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Presenters/Authors
Leslie O. Rieck
(), The Ohio State University, rieck.6@osu.edu;
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S. Mažeika Patricio Sulliván
(), The Ohio State University, sullivan.191@osu.edu;
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